Whimsical robots made from old cans, tins, and leftover bits and bobs have become somewhat of a cottage industry lately, and can be found everywhere from Etsy to your local craft show. Here are a few I found recently at a small town art gallery. The largest robot is 12 1/2 inches tall. Mr. Half and Half has a themostat head and arms made from socket wrenches. The Clock Bot has a vintage alarm clock head and arms made from can openers. The tiny T&T robot has a spice box body, a film canister...